you have seen both fighters, will win?．
A. Since; do you think who
B. As; who you think
C. When; whoever
D. Since; who do you think
网友回答
A. Since; do you think who
B. As; who you think
C. When; whoever
(答案→)D. Since; who do you think
解析：考查插入语和连词辨析。Do you think作为插入语，通常放在句中，排除A项。Whoever无论是谁的语气太强烈，根据句意说明的众所周知的原因，用since。句意：既然你已经看见了打架的人，你认为会会赢呢？故D正确。